Autodesk EAGLE is an electronic design automation (EDA) software developed by Autodesk. It is used to design and develop printed circuit boards (PCBs). It enables users to design, layout, and prototype electronic circuits quickly and easily. It includes powerful design automation tools such as schematic capture, board layout, auto-routing, and signal integrity analysis. Autodesk EAGLE also provides a library of parts and components, interactive routing tools, and a comprehensive set of design rules. It is designed to be easy to learn and use, enabling users to complete projects faster and more efficiently. Autodesk EAGLE is used by engineers, makers, hobbyists, and students around the world.
Discontinued The program seems to be no longer updated. The latest version, 0.9.3b, released in June 2016, can still be downloaded from the official website.
Fritzing has almost the same functionality BUT much less convenient in comparison to EAGLE
Easy, 3d sketches, huge libraries.